<template>
  <div id="app">
    <div>
      <div  v-for="(item,index) in arr" :key="index" style="display: inline-block"  >
        <input type="checkbox"  v-model="arr1" :value="item"/>
        <span>{{item}}</span>
      </div>
      <p>你选中的元素, 累加的值和为: {{total}}</p>
    </div>
  </div>
</template>

<script>
export default {
  components: {},
  data() {
    return {
      arr: [9, 15, 19, 25, 29, 31, 48, 57, 62, 79, 87],
      arr1:[]
    }
  },
  computed:{
    total(){
      return this.arr1.reduce((sum,item)=>sum+item,0)
    }
  }
}
</script>

<style></style>
